Trimethylsilylacetylene
CAS: 1066-54-2
Category: Organosilicon Compounds
| Purity | Reagent Grade ≥98%, High-Purity Grade ≥99%, Technical Grade ≥95% |
| Molecular Formula | C5H10Si |
| Molecular Weight | 98.22 |
| Appearance | Colorless to pale yellow liquid |
| Packaging | 5 g/glass bottle, 25 g/glass bottle, or 100 g/glass bottle |
| Testing Indicators | Appearance — Visual inspection; Boiling point — Distillation (ASTM D1078); Refractive index — Abbe refractometer (ASTM D1218); Density — Hydrometer or pycnometer (ASTM D4052); Purity — GC-FID (ASTM D7504 or GB/T 9722); Identification — ¹H/¹³C NMR and FTIR (Si–C≡C ~2100 cm⁻¹); Moisture — Karl Fischer titration (GB/T 6283); Acetylenic hydrogen — Acid–base titration or GC quantitation. |
| Storage Notes | Store in a cool, dark, and well-ventilated place (often recommended <15℃). It is highly flammable (liquid and vapor) and moisture/air sensitive. Keep the container tightly closed under an inert gas atmosphere (like nitrogen or argon), away from heat, sparks, open flames, and sources of ignition. Ground/bond containers. |
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Primarily used in organic synthesis as a reagent for ethynylation and the introduction of a terminal alkyne group (acetylenic group), particularly in Click Chemistry applications (conjugation chemistry) and the synthesis of functionalized acetylenes.